diff --git a/photoprism/config.json b/photoprism/config.json
index 478486ddc..00c089e6a 100644
--- a/photoprism/config.json
+++ b/photoprism/config.json
@@ -39,7 +39,7 @@
   ],
   "environment": {
     "PHOTOPRISM_ADMIN_PASSWORD": "please_change_password",
-    "PHOTOPRISM_HTTP_PORT": 2341,
+    "PHOTOPRISM_HTTP_PORT": "2341",
     "working_dir": "/data/photoprism"
   },
   "ingress": true,
@@ -100,4 +100,4 @@
   "url": "https://github.com/alexbelgium/hassio-addons-test",
   "version": "220302-impish",
   "webui": "http://[HOST]:[PORT:2342]"
-}
\ No newline at end of file
+}